| IR | drop of voltage across a resistor produced by a current; ileal resection; immune response; immunizat... |
|---|---|
| IRTIS | Integrated Radiation Therapy Information System |
| IS | ileal segment; immediate sensitivity; immune serum; immunosuppression; impingement syndrome; incenti... |
| ISD | immunosuppressive drug; Information Services Division; inhibited sexual desire; interstimulus distan... |
| ISI | infarct size index; initial slope index; injury severity index; Institute for Scientific Information... |